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/*
TikZiT - a GUI diagram editor for TikZ
Copyright (C) 2018 Aleks Kissinger
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "edgestyle.h"
#include <QPainter>
#include <QPixmap>
EdgeStyle *noneEdgeStyle = new EdgeStyle();
EdgeStyle::EdgeStyle() : Style()
{
}
EdgeStyle::EdgeStyle(QString name, GraphElementData *data) : Style(name, data)
{
}
EdgeStyle::ArrowTipStyle EdgeStyle::arrowHead() const
{
if (_data == 0) return NoTip;
if (_data->atom("->") || _data->atom("<->") || _data->atom("|->")) return Pointer;
if (_data->atom("-|") || _data->atom("<-|") || _data->atom("|-|")) return Flat;
return NoTip;
}
EdgeStyle::ArrowTipStyle EdgeStyle::arrowTail() const
{
if (_data == 0) return NoTip;
if (_data->atom("<-") || _data->atom("<->") || _data->atom("<-|")) return Pointer;
if (_data->atom("|-") || _data->atom("|->") || _data->atom("|-|")) return Flat;
return NoTip;
}
EdgeStyle::DrawStyle EdgeStyle::drawStyle() const
{
if (_data == 0) return Solid;
if (_data->atom("dashed")) return Dashed;
if (_data->atom("dotted")) return Dotted;
return Solid;
}
QPen EdgeStyle::pen() const
{
QPen p(strokeColor());
p.setWidthF((float)strokeThickness() * 2.0f);
QVector<qreal> pat;
switch (drawStyle()) {
case Dashed:
pat << 3.0 << 3.0;
p.setDashPattern(pat);
break;
case Dotted:
pat << 1.0 << 1.0;
p.setDashPattern(pat);
break;
}
return p;
}
QPainterPath EdgeStyle::path() const
{
return QPainterPath();
}
QPainterPath EdgeStyle::palettePath() const
{
return QPainterPath();
}
QIcon EdgeStyle::icon() const
{
// draw an icon matching the style
QPixmap px(100,100);
px.fill(Qt::transparent);
QPainter painter(&px);
if (_data == 0) {
QPen pen(Qt::black);
pen.setWidth(3);
} else {
painter.setPen(pen());
}
painter.drawLine(10, 50, 90, 50);
QPen pn = pen();
pn.setStyle(Qt::SolidLine);
painter.setPen(pn);
switch (arrowHead()) {
case Pointer:
painter.drawLine(90,50,80,40);
painter.drawLine(90,50,80,60);
break;
case Flat:
painter.drawLine(90,40,90,60);
break;
}
switch (arrowTail()) {
case Pointer:
painter.drawLine(10,50,20,40);
painter.drawLine(10,50,20,60);
break;
case Flat:
painter.drawLine(10,40,10,60);
break;
}
return QIcon(px);
}
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